/*
   Copyright (c) 2011, 2012 Mizar Tools Contributors (mizartools.org)

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
/*  Contributors :
 *	2011-02-18 Marco Riccardi - initial implementation
 *  2012-04-06 Marco Riccardi - added message in DliParseException
 *
 */
package org.mizartools.dli;

public class ItemId {

	ArticleId articleId = null;
	ItemType itemType = null;
	int nr = -1;
	
	public static ItemId newInstance(String string) throws DliParseException{
		ItemId itemId = new ItemId();
		int position = string.indexOf(":");
		if (position == -1) {
			throw new DliParseException("["+string+"] is not valid in ItemId");
		}
		itemId.articleId = ArticleId.newInstance(string.substring(0, position));
		string = string.substring(position+1, string.length());
		position = string.indexOf(" ");
		if (position == -1) {
			throw new DliParseException("["+string+"] is not valid in ItemId");
		}
		try{
			itemId.itemType = ItemType.valueOf(string.substring(0, position));
			itemId.nr = Integer.parseInt(string.substring(position+1, string.length()));
		}
		catch(Exception e){
			throw new DliParseException("["+string+"] is not valid in ItemId");
		} 
		return itemId;
	}
	
	public ItemId(ArticleId articleId, ItemType itemType,int nr) throws DliException {
		if (articleId == null || itemType == null || nr < 1){
			throw new DliException();
		}
		this.articleId = articleId;
		this.itemType = itemType;
		this.nr = nr;
	}

	private ItemId() {}

	@Override
	public String toString() {
		return articleId.toString()+":"+itemType.toString()+" "+nr;
	}

	public ArticleId getArticleId() {
		return articleId;
	}

	public ItemType getItemType() {
		return itemType;
	}

	public int getNr() {
		return nr;
	}

}
